Journal of Atmospheric and Environmental Optics, Volume. 19, Issue 6, 665(2024)
Analysis of sand-dust pollution processes in Northern China in March 2021 based on Mie scattering aerosol lidar
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Fig. 1. Structural schematic (a) and appearance (b) of Mie scattering lidar
Fig. 2. Location of Mie scattering lidar in Beijing-Tianjin-Hebei Region
Fig. 3. Air mass trajectories of Beijing (a) and Tianjin (b) on March 15, 2021
Fig. 4. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Zhangjiakou; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Beijing from March 14 to 18, 2021
Fig. 5. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Baoding; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Langfang from March 14 to 18, 2021
Fig. 6. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Tianjin; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Qinghuangdao from March 14 to 18, 2021
Fig. 7. The PM10 concentration change of each city from March 14 to 18, 2021. (a) Beijing and Zhangjiakou; (b) Langfang and Baoding; (c) Tianjin and Qinhuangdao
Fig. 8. Air mass trajectories of Beijing (a) and Tianjin (b) on March 21, 2021
Fig. 9. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Zhangjiakou; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Beijing from March 21 to 24, 2021
Fig. 10. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Baoding; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Langfang from March 21 to 24, 2021
Fig. 11. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Tianjin; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Qinghuangdao from March 21 to 24, 2021
Fig. 12. The PM10 concentration change of each city from March 21 to 24, 2021. (a) Beijing and Zhangjiakou; (b) Langfang and Baoding; (c) Tianjin and Qinhuangdao
Fig. 13. Air mass trajectories of Beijing (a) and Tianjin (b) on March 27, 2021
Fig. 14. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Zhangjiakou; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Beijing from March 27 to April 1, 2021
Fig. 15. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Baoding; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Langfang from March 27 to April 1, 2021
Fig. 16. Inversion profiles of extinction coefficient (a) and depolarization ratio (b) for Tianjin; inversion profiles of extinction coefficient (c) and depolarization ratio (d) for Qinhuangdao from March 27 to April 1, 2021
Fig. 17. The PM10 concentration change of each city from March 27 to April 1, 2021. (a) Beijing and Zhangjiakou; (b) Langfang and Baoding; (c) Tianjin and Qinhuangdao
Table 1. Parameters of the Mie scattering lidar
View tableView in ArticleTable 1. Parameters of the Mie scattering lidar
Parameter Value Laser wavelength/nm 532 Laser frequency/Hz 3000 Laser single pulse energy/mJ 1 Diameter of receiving telescope/mm 120 Receiving angle of view/mrad 0.4 Detection channels 2 Filter bandwidth/nm 1 Data collection method A/D or photon counting Effective measurement/km 0–10 (Clear air) Spatial resolution/m 7.5 Time resolution/s 1–1800 (Adjustable) Operating temperature/℃ 5–40 Storage temperature/℃ 0–70 Way of working Manual, automatic, and network control Power 220 V/50 Hz/1500 W Volume 0.6 m × 0.35 m × 0.25 m (< 25 kg)
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Daxin LIU, Ci SONG, Guanghe SUN, Ziheng TANG, Chenbo XIE, Peng ZHUANG. Analysis of sand-dust pollution processes in Northern China in March 2021 based on Mie scattering aerosol lidar[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(6): 665
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Received: Mar. 22, 2022
Accepted: --
Published Online: Jan. 8, 2025
The Author Email: Peng ZHUANG (zhuangpeng@ldchina.cn)
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